Infectious Coryza

Posted by admin On May - 4 - 2011

Clinical Cases :

Infectious Coryza 1

Infectious Coryza 2

Infectious Coryza 3

Infectious Coryza : Highly contagious acute disease of upper respiratory tract of Chicken which can turn into Chronic respiratory disease .

It`s also called Raup

Cause : Haemophilus Paragallinarum ( Gram -ve Bacteria – Rod shape – Non motile – Non spore form – Capsulated )

Growth Requirements :

  • Blood ( x Factor )
  • High humidity ( 5-10% CO2 – 1% Chicken Serum – Nacl 1-1.5% gm/L
  • Best temperature for growth 37 c

Signs :

  • Rapid onset
  • High Morbidity
  • Low Mortality
  • Poor Growth performance
  • Decease food water Consumption
  • Decrease Egg production
  • Seromucoid Naasal and ocular discharge
  • Facial edema
  • Conjunctivitis
  • Swollen wattles
  • Difficulty in breathing
  • Fowl odor in flock
  • Arthritis
  • Septicemia

Post-mortem lesions :

  • Cattahral to Fibrion inflammation of Nasal passage,Infraorbital sinus and Conjunctiva
  • Sub Cutenous edema of The face and wattle
  • Pneumonia and Air sacculitis

Diagnosis :

  • Flock History
  • Clinical signs
  • Lesions
  • Isolation and identification of Causative agent ( The sample from infra orbital sinus,Trachea and Air sac inoculated in blood agar )

Treatment :

  • Sulphonemides
  • Trimethoprim + Sulphamethoxine
  • Dihydrostreptomycin + Sulpha

Control :

  • Depopulation of all infected, Recovered flock
  • Cleaning and disinfectant of Equipments and building
  • Rest for 2-3 weeks

Comments are closed.

/* /*